if you have big capital and are interested in Bitcoin, then I think it's better to buy Bitcoin because Bitcoin is safer to keep in the short and long term.
Bitcoin can also be very profitable if you are patient in holding it because Bitcoin can return to its highest price, so investing now on Bitcoin is the right decision.
It is safer to invest in Bitcoin, but only for the following reason: altcoins prices depend on this cryptocurrency. However, many alternative cryptos can give you better returns in the shortest time.